A developer can build a calldata "block"

[LHerskind]

Part of https://github.com/AztecProtocol/aztec3-milestones/issues/18

A developer should be able to build the generate the payload for a rollup given that he have the current state.

type AppendOnlyTreeSnapshot = { 
    root: fr,
    next_available_leaf_index: uint32, // type tbd
}

type CalldataPreimage {
    rollup_id: u32,

    start_private_data_tree_snapshot: AppendOnlyTreeSnapshot,
    start_tree_of_historic_private_data_tree_roots_snapshot: AppendOnlyTreeSnapshot,
    start_nullifier_tree_snapshot: AppendOnlyTreeSnapshot,
    start_contract_tree_snapshot: AppendOnlyTreeSnapshot,
    start_tree_of_historic_contract_tree_roots_snapshot: AppendOnlyTreeSnapshot,
    
    end_private_data_tree_snapshot: AppendOnlyTreeSnapshot,    
    end_nullifier_tree_snapshot: AppendOnlyTreeSnapshot,    
    end_contract_tree_snapshot: AppendOnlyTreeSnapshot,    
    end_tree_of_historic_private_data_tree_roots_snapshot: AppendOnlyTreeSnapshot,    
    end_tree_of_historic_contract_tree_roots_snapshot: AppendOnlyTreeSnapshot,

    new_commitments: Array<fr, ?>,
    new_nullifiers: Array<fr, ?>,
    new_contracts: Array<fr, ?>
    new_contract_data: Array<{az_address, eth_address}, ?>,
}

[LHerskind]

Included in #35

[LHerskind]

Fixed in #41